npub19lt4284mghqxekzm6n5njxurnxrxhqhrva2leusdsuu5ja5jeycq66qfjk (npub19lt…qfjk) something like https://hackaday.com/2022/11/20/a-handy-oshw-usb-cable-tester-for-your-toolkit/?
Your broadband is probably 330 Mbit/s, which fits within the 480 Mbit/sec of USB 2.0. So maybe your cable doesn't even have the high-speed pairs? Your computer can tell you if your Ethernet dongle appears as a USB 2.0 or USB 3.0 device.